The **MAH61FCD-R** refers to a high-performance **Thin Film Power Resistor**, typically manufactured by companies like Isabellenhütte (Heusler) or similar precision component specialists. These parts are designed for high-current sensing and power electronics applications. --- ### 1. Key Technical Specifications The following table summarizes the typical electronic characteristics of this component series: | Parameter | Typical Value | | :--- | :--- | | **Component Type** | Precision Power Resistor | | **Technology** | Thin Film / Metal Foil | | **Power Rating** | Up to 10W (with heat sink) | | **Resistance Range** | Low Ohmic (mΩ range) | | **Tolerance** | ±0.1% to ±5% | | **Temperature Coefficient (TCR)** | < 50 ppm/K | | **Package Style** | TO-220 or TO-247 (Heat sink mountable) | --- ### 2. Physical Construction The "MAH" series is built to handle significant thermal stress while maintaining stability. * **Substrate:** Usually Alumina or Aluminum Nitride for high thermal conductivity. * **Housing:** Molded plastic package with a metal backplate for mounting to a heat sink. * **Terminals:** Radial leads (usually 2 or 4 leads depending on Kelvin sensing requirements). --- ### 3. Functional Applications The MAH61FCD-R is primarily used in circuits where precision and power handling are required simultaneously: 1. **Current Sensing:** Used in motor controllers and battery management systems (BMS) to measure high currents via voltage drop. 2. **Power Supplies:** Acts as a feedback or protection resistor in switch-mode power supplies (SMPS). 3. **Electronic Loads:** Used in testing equipment to dissipate power while maintaining a stable resistance value. 4. **Automotive Electronics:** High-reliability environments requiring stability under varying temperatures. --- ### 4. Part Number Breakdown (Generic) While specific manufacturers vary, the suffixing usually denotes: * **MAH:** Series identifier (High Power/High Precision). * **61:** Physical size or power rating code. * **F:** Tolerance code (commonly ±1%). * **CD:** Temperature coefficient or material designation. * **R:** Packaging (e.g., Reel or RoHS compliant). ---